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JVC KD-G179UR Service Manual

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SERVICE MANUAL
4
2006
MA260
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
1
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
CD RECEIVER
KD-G179UR

TABLE OF CONTENTS

COPYRIGHT © 2006 Victor Company of Japan, Limited
No.MA260
2006/4

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  • Page 1: Table Of Contents

    CD RECEIVER MA260 2006 KD-G179UR Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS PRECAUTIONS ............... 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION AUDIO AMPLIFIER SECTION 17 W RMS × 4 Channels at 4 Ω and [< or =] 1% THD+N Power Output 80 dBA (reference: 1 W into 4 Ω) Signal to Noise Ratio 4 Ω (4 Ω to 8 Ω allowance) Load Impedance Tone Control Range Bass...

  • Page 3: Precautions

    SECTION 1 PRECAUTIONS Safety Precautions Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.
  • Page 4 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.2.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
  • Page 5 Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam. procedures other than those specified here in may result in 3.CAUTION : There are no serviceable parts inside the hazardous radiation exposure.

  • Page 6: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS CD mechanism For the CD mechanism, please refer mechanism manual TN2007-1001 (No. MY003). 1-6 (No.MA260)

  • Page 7: Disassembly

    SECTION 3 DISASSEMBLY Main body section 3.1.1 Removing the front panel assembly (See Fig.1) (1) Push the detach button in the lower right part of the front panel assembly and remove the front panel assembly. Front panel assembly Detach button Fig.1 3.1.2 Removing the bottom cover (See Fig.2)
  • Page 8 3.1.4 Removing the side panel (See Fig.4) Reference: Remove the front panel assembly as required. (1) Remove the screw B and two screws C attaching the side panel on the left side of the main body. (2) Remove the side panel from the main body. Side panel Fig.4 3.1.5 Removing the rear bracket...
  • Page 9 3.1.7 Removing the CD mechanism assembly (See Fig. 7) • Remove the front panel assembly, bottom cover, side panel, rear bracket and main board. Reference: Remove the front chassis assembly as required. (1) Remove the three screws H attaching the CD mechanism assembly on the top chassis.

  • Page 10: Adjustment

    (3) Digital tester Output Level Line out 2.0V (Vol. MAX) (4) Tracking offset meter (5) Test Disc JVC :CTS-1000 Dummy load (6) Extension cable for check Exclusive dummy load should be used for AM,and FM. For FM EXTSH002-22P × 1...

  • Page 11: Troubleshooting

    SECTION 5 TROUBLESHOOTING Feed section Is 4V present at both Check the feed motor. sides of the feed motor? Check the connections Is the voltage output at between the feed motor pin 4 and pin 5 of IC541? and IC541. Is the power supply Is the voltage input at pin Check IC541.
  • Page 12 Does the RF signal Is the RF waveform Is the disk rotated? appear at RF TP? at TP RF distorted? Is the voltage output at Check the spindle motor Check the circuits in pin 6 and pin 7 of IC541? and its wiring.
  • Page 13 Is the sound output from Normal both channels (L, R)? Is the audio signal (including sampling Is the audio signal output No sound from either Is 9V present at pin 26 output components) at pin 22 and pin 25 of channel.
  • Page 14 Maintenance of laser pickup Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens Turn of the power switch and, disconnect the with a alcohol soaked cotton swab. power cord.
  • Page 15 16 PIN CORD DIAGRAM Green Black Violet Blue Gray BL/WH White Yellow WH/BK GN/BK VI/BK GY/BK BL/WH 7 RD RD 7 16 YL MEMORY YL 4 8 BK REMOTE 5 BL/WH 3 GN 11 GN/BK 2 VI 10 VI/BK 4 WH 12 WH/BK 1 GY 9 GY/BK...
  • Page 16 Victor Company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA260) Printed in Japan...
  • Page 17 SCHEMATIC DIAGRAMS CD RECEIVER KD-G179UR CD-ROM No.SML200604 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Contents Block diagram Standard schematic diagrams Printed circuit boards No.MA260SCH COPYRIGHT 2006 Victor Company of Japan, Limited. 2006/4...

  • Page 18: Safety Precaution

    Safety precaution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.

  • Page 19: Block Diagram

    Block diagram Main amplifier section TU.LCH TU701 TU.RCH FM/AM TUNER CD mechanism control section FM/AM FM.OSC VF1,VF2,VT1,VT2,LD,MD,VREF PICK UP S.METER SEEK/STOP TRACKING+/- FOCUS & SD/ST FOCUS+/- TRACKING MONO COIL LINEOUT.MUTE SUB.W.MUTE Q862 LINE OUT Q332, Q4322 MUTING REAR/ LINE OUT RL/SUB.W RL/SUB.W MUTING...

  • Page 20: Standard Schematic Diagrams

    Standard schematic diagrams Main section Parts are safety assurance parts. When replacing those parts make TU701 QAU0312-002 sure to use the specified one. CJ701 QNB0190-001 L701 4.7u R201 R703 R101 R701 TU.RCH TU.LCH Q791 2SA1365/F/-X R333 R334 R735 RR/SUB.W D332 QNN0519-001 1.5k R791...
  • Page 21 CD section D551 1A3G-T1 C553 C547 C552 C551 C546 0.01 220/10 47/10 0.022 C543 0.033 R596 C545 8.2k 0.01 C541 R558 IC561 47/6.3 MN6627482WA C540 Q541 2SA2093/QR/-T CD8V CD.RESET STATUS KICK IC541 SUBQ SQCK LA6242H-X TLOCK FLOCK C574 CD.SENSE FBAL 0.01 TBAL MDATA...
  • Page 22 LCD & Key control section IC681 JS686 RPM7338-V4 QSW0976-001 C682 0.012 R687 C681 4.7/6.3 R688 C687 0.022 CJ601 QGZ1601K1-15S LCD1 QLD0392-001 ACC5V REMOCON C664 ENC1 ENC2 DIMOUT LCD.SCK LCD.SO LCD.CE KEY0 KEY1 KEY2 R605 R604 R603 R602 R601 KEY2 1.2k R661 2.2K S601...
  • Page 23 Printed circuit boards Main board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) CN901 L901 C341 IC901 C901 R911 CJ701 D904 D869 C863 D861 D867 C861 D905 C914 R903 R862 R861 R434 C910 C902 C905 C851...
  • Page 24 Victor Company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,Gumma-ken,371-8543,Japan Printed in Japan (No.MA260SCH)

  • Page 25: Parts List

    PARTS LIST KD-G179UR * All printed circuit boards and its assemblies are not available as service parts. * Please refer to the mechanism manual (model TN2007-1001, No.MY003) for the CD mechanism. - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 5 Electrical parts list (Block No.01~02)
  • Page 26 Exploded view of general assembly and parts list Block No. Switch board...
  • Page 27 Main board The parts without symbol number are not service.
  • Page 28 General Assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local  GE10136-001A TOP CHASSIS GE40135-001A EARTH PLATE GE31894-001A HEAT SINK QYSDST2604ZA TAP SCREW M2.6 x 4mm(x3) GE40235-001A SCREW (x2) QYSDST2604ZA TAP SCREW M2.6 x 4mm(x3) GE40235-004A SCREW (x2) QYSDST2610ZA TAP SCREW...

  • Page 29: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1] C332 NCB31EK-104X C CAPACITOR 0.1uF 25V K  Symbol No. Part No. Part Name Description Local C333 NCB31EK-104X C CAPACITOR 0.1uF 25V K C334 QFV91HJ-474Z MF CAPACITOR...
  • Page 30  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C717 NDC31HJ-221X C CAPACITOR 220pF 50V J R512 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J C718 NCB31EK-223X C CAPACITOR 0.022uF 25V K R513 NRSA63J-473X MG RESISTOR 47kΩ...
  • Page 31  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R831 NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J C661 NBE20JM-106X TA E CAPACITOR 10uF 6.3V M R832 NRS181J-223X MG RESISTOR 22kΩ 1/8W J C662 NDC31HJ-681X C CAPACITOR...
  • Page 32 Packing materials and accessories parts list Block No. A10 A11 A12 A13 A14 A15 KIT : A3 A4 A6 A7...
  • Page 33 Packing and Accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local  GE20137-003A MOUNTING SLEEVE GE20135-007A TRIM PLATE VKZ4027-202 PLUG NUT VKH4871-003 MOUNT BOLT VKZ4328-003 LOCK NUT QYWWS53A008ZA WASHER 0mm/5.3mm x GE40130-002A HOOK (x2) FSJB3002-00E HARD CASE QAM0089-002 ISO CABLE A 10...

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